In my opinion, they are neither both. They are simply businessmen who is trying to be smart by maximising their returns and they are making it good for themselves. Couple with the reason that most of the the allegations against them are merely hear say since it cannot be verified with evidence and those that have been casted are the ones that can be said to be criminals and conmen. So far you still cover up, you are a businessman.
Running a casino or owning a gambling site is not just simple businesses. If gambling does not have a very good reputation that does not imply that the owners are also bad people. However, there are some families who are mobsters and they own casinos but so is the case with other businesses. A criminal if has a lot of money, may have restaurant, mall or something else.
almost most casino owners must have other businesses out there
just to mask they hide their real business
because having a casino is the biggest source of income that I know
and of course the cost they spend to build a casino to be famous is not a bit.
and which is ultimately commensurate with the income they earn from casinos
Honestly, many businessmen do have more than one business but at the end they are dealing in only one type, which bring them success and prosperity. No doubt, people who are involved in wrong activities try to hide their actions and true identities while diversity gives huge profits also. You never know, whether a business is owned by a devil or an angel.